2220012011221 has 2 divisors, whose sum is σ = 2220012011222. Its totient is φ = 2220012011220.

The previous prime is 2220012011213. The next prime is 2220012011237. The reversal of 2220012011221 is 1221102100222.

It is a happy number.

2220012011221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2220012011237) can be obtained adding 2220012011221 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1268977467121 + 951034544100 = 1126489^2 + 975210^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220012011221 - 2³ = 2220012011213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220012011195 and 2220012011204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220012051221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110006005610 + 1110006005611.

It is an arithmetic number, because the mean of its divisors is an integer number (1110006005611).

Almost surely, 2^{2220012011221} is an apocalyptic number.

It is an amenable number.

2220012011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220012011221 is an equidigital number, since it uses as much as digits as its factorization.

2220012011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2220012011221 its reverse (1221102100222), we get a palindrome (3441114111443).

The spelling of 2220012011221 in words is "two trillion, two hundred twenty billion, twelve million, eleven thousand, two hundred twenty-one".